DE102018206388A1 - DC / DC converter - Google Patents
DC / DC converter Download PDFInfo
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- DE102018206388A1 DE102018206388A1 DE102018206388.5A DE102018206388A DE102018206388A1 DE 102018206388 A1 DE102018206388 A1 DE 102018206388A1 DE 102018206388 A DE102018206388 A DE 102018206388A DE 102018206388 A1 DE102018206388 A1 DE 102018206388A1
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- converter
- transformer
- inductance
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- resonant
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- 238000004804 winding Methods 0.000 claims abstract description 25
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims abstract description 8
- 238000000926 separation method Methods 0.000 claims abstract description 4
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 210000002023 somite Anatomy 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/363—Electric or magnetic shields or screens made of electrically conductive material
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33569—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements
- H02M3/33576—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having several active switching elements having at least one active switching element at the secondary side of an isolation transformer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2871—Pancake coils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/24—Inductive coupling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0064—Magnetic structures combining different functions, e.g. storage, filtering or transformation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/4815—Resonant converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Dc-Dc Converters (AREA)
Abstract
DC/DC-Wandler (200) für den resonanten Betrieb mit Potentialtrennung, umfassend
- einen Transformator (230) mit einer primärseitigen und einer sekundärseitigen Induktivität (231, 232),
- eine Wechselrichteranordnung (110), die mit der primärseitigen Induktivität (231) des Transformators (230) verbunden ist,
- eine Gleichrichteranordnung (150), die mit der sekundärseitigen Induktivität (232) des Transformators (230) verbunden ist,
- eine Kapazität (121), die in Serie zur primärseitigen Induktivität (231) des Transformators (230) geschaltet ist und zusammen mit dieser einen Schwingkreis ausbildet, dadurch gekennzeichnet, dass
- die primärseitige und sekundärseitige Induktivität (231, 232) jeweils eine zirkulare Wicklung (301) umfassen, die auf einer Ferritplatte (302) aufgebracht ist,
- die Ferritplatten (302) so angeordnet sind, dass die Wicklungen (301) einander zugewandt sind.
A DC / DC converter (200) for resonant operation with potential separation, comprising
a transformer (230) having a primary-side and a secondary-side inductance (231, 232),
an inverter arrangement (110) which is connected to the primary-side inductance (231) of the transformer (230),
a rectifier arrangement (150) which is connected to the secondary-side inductance (232) of the transformer (230),
- A capacitor (121) connected in series with the primary-side inductance (231) of the transformer (230) and forms together with this a resonant circuit, characterized in that
the primary-side and secondary-side inductances (231, 232) each comprise a circular winding (301) which is applied to a ferrite plate (302),
- The ferrite plates (302) are arranged so that the windings (301) facing each other.
Description
Die Erfindung betrifft einen DC/DC-Wandler für den resonanten Betrieb mit Potentialtrennung.The invention relates to a DC / DC converter for resonant operation with potential separation.
DC-DC-Wandler-Topologien, die im voll resonanten Modus betrieben werden, umfassen einen Schwingkreis, einen Transformator und eine den Schwingkreis anregenden Halb- oder Vollbrückenschaltung.
Zur Sicherstellung des ZVS-Betriebes ist ein gegenüber der Grundschwingung nacheilender Strom im Resonanzkreis notwendig. Dieser ist zur Umladung der parasitären Schalterkapazitäten notwendig. Die Sicherstellung dieses Stromes ist bei Volllast durch den fließenden Laststrom unproblematisch. Bei Leerlaufnähe muss jedoch durch zusätzliche Maßnahmen ein nacheilender Strom zur Umladung der Schalterkapazitäten bereitgestellt werden. Dies erfolgt über eine Parallelinduktivität.To ensure the ZVS operation, a lagging current in the resonant circuit compared to the fundamental is necessary. This is necessary for transhipment of the parasitic switch capacities. Ensuring this current is unproblematic at full load due to the flowing load current. When close to idle, however, additional measures must be taken to provide a lagging current for transhipment of the switch capacities. This is done via a parallel inductance.
Sowohl die Serieninduktivität als auch die Parallelinduktivität sind typischerweise groß und vergleichsweise schwer und benötigen einen für den gesamten DC/DC-Wandler nicht vernachlässigbaren Bauraum.Both the series inductance and the parallel inductance are typically large and comparatively heavy and require a space that is not negligible for the entire DC / DC converter.
Es ist Aufgabe der vorliegenden Erfindung, einen verbesserten DC/DC-Wandler anzugeben, der verringerte Anforderungen an den Bauraum aufweist, also kleiner aufgebaut werden kann.It is an object of the present invention to provide an improved DC / DC converter, which has reduced requirements for the installation space, so can be made smaller.
Diese Aufgabe wird durch einen DC/DC-Wandler mit den Merkmalen von Anspruch 1 gelöst. Die Unteransprüche betreffen vorteilhafte Ausgestaltungen für den DC/DC-Wandler.This object is achieved by a DC / DC converter having the features of claim 1. The subclaims relate to advantageous embodiments of the DC / DC converter.
Der erfindungsgemäße DC/DC-Wandler für den resonanten Betrieb mit Potentialtrennung umfasst einen Transformator mit einer primärseitigen und einer sekundärseitigen Induktivität, eine Wechselrichteranordnung, die mit der primärseitigen Induktivität des Transformators verbunden ist und eine Gleichrichteranordnung, die mit der sekundärseitigen Induktivität des Transformators verbunden ist. Weiterhin umfasst der DC/DC-Wandler eine Kapazität, die in Serie zur primärseitigen Induktivität des Transformators geschaltet ist und zusammen mit dieser einen Schwingkreis ausbildet.The inventive DC / DC converter for resonant operation with potential separation comprises a transformer having a primary-side and a secondary-side inductance, an inverter assembly which is connected to the primary-side inductance of the transformer and a rectifier arrangement which is connected to the secondary-side inductance of the transformer. Furthermore, the DC / DC converter comprises a capacitor which is connected in series with the primary-side inductance of the transformer and forms a resonant circuit together with this.
Dabei umfassen die primärseitige und sekundärseitige Induktivität jeweils eine zirkulare Wicklung, die auf einer Ferritplatte aufgebracht ist, wobei die Ferritplatten so angeordnet sind, dass die Wicklungen einander zugewandt sind.In this case, the primary-side and secondary-side inductors each comprise a circular winding, which is applied to a ferrite plate, wherein the ferrite plates are arranged so that the windings face each other.
Durch Anwendung dieses für DC-DC-Wandler-Transformatoren neuartigen Aufbaukonzeptes werden die Parallelinduktivität sowie die Serieninduktivität unnötig und können vorteilhafterweise entfallen. Durch die Wicklungskonfiguration wird die für die Topologie wichtige große Serieninduktivität in Form einer großen Streuung durch den Transformator selbst bereitgestellt. Weiterhin wird auch die für den ZVS-Betrieb in Leerlaufnähe geringe Parallelinduktivität durch den Transformator selbst erreicht. Die Kopplung einer solchen Wicklungskonfiguration ist deutlich kleiner als bei herkömmlichen Transformatoren. Für die Erfindung wurde aber erkannt, dass diese Eigenschaft in Verbindung mit der Resonanzwandlertopologie gezielt genutzt werden kann.By applying this novel design concept for DC-DC converter transformers, the parallel inductance and the series inductance become unnecessary and can advantageously be dispensed with. The winding configuration provides the large series inductance, which is important for the topology, in the form of a large spread through the transformer itself. Furthermore, the low parallel inductance for ZVS operation close to no-load is achieved by the transformer itself. The coupling of such a winding configuration is significantly smaller than in conventional transformers. However, it has been recognized for the invention that this property can be used selectively in conjunction with the resonant converter topology.
Vorteilhafte Ausgestaltungen des erfindungsgemäßen DC/DC-Wandlers gehen aus den von Anspruch 1 abhängigen Ansprüchen hervor. Dabei kann die Ausführungsform nach Anspruch 1 mit den Merkmalen eines der Unteransprüche oder vorzugsweise auch mit denen aus mehreren Unteransprüchen kombiniert werden. Demgemäß können für den DC/DC-Wandler noch zusätzlich folgende Merkmale vorgesehen werden:
- - Die Ferritplatten können so angeordnet sein, dass die Wicklungsachsen übereinstimmen.
- - Die zirkularen Wicklungen haben bevorzugt denselben Durchmesser.
- - Die Ferritplatten können jeweils auf einem Schirmblech, insbesondere einem Schirmblech aus Aluminium oder Kupfer, angeordnet sein. Die Ferritplatten dienen der Flussführung auf der Rückseite der Wicklungen, um in eventuell dahinter befindlichen Schaltungsteilen Spannungsinduktionen zu vermeiden. Das Schirmblech wiederum hält den magnetischen Restfluss innerhalb der Anordnung hält.
- - Die Kopplung der Wicklungen kann zwischen 60% und 80% betragen. Dies kann insbesondere durch die Wahl des Luftspaltes erreicht werden, über den die Streuinduktivität der Anordnung als auch die Kopplung des Systems eingestellt werden. Eine Erhöhung des Luftspalts bedeutet eine Erhöhung des Streuflusses verbunden mit einer Erhöhung der Streuinduktivität sowie einer Reduzierung der Kopplungsinduktivität. Der Kopplungsfaktor ist günstig realisierbar mit einem Verhältnis Induktorquerschnitt / Luftspalt von 10 bis 20. Damit ist ein ausreichender Magnetisierungsstrom in Leerlaufnähe der Schaltung gewährleistet und die zur Spannungssteuerung notwendige Streuinduktivität wird ausreichend groß.
- - Das Schirmblech kann als Kühlkörper ausgestaltet sein. Vorteilhaft wird dadurch weiterer Aufwand zur Kühlung vermieden.
- - Auf einer von der Wicklung abgewandten Seite eines der Schirmbleche kann ein Schaltungsträger angeordnet sein, insbesondere eine Leiterplatte oder ein IMS. Auf dem Schaltungsträger befinden sich ein oder mehrere leistungselektronische Bauelemente. Hierdurch wird vorteilhaft Bauraum gespart, speziell wenn das Schirmblech ausgestaltet ist als Kühlkörper und somit eine Entwärmung der Bauelemente bereits gewährleistet ist.
- - The ferrite plates can be arranged so that the winding axes coincide.
- The circular windings preferably have the same diameter.
- - The ferrite plates can each be arranged on a shield plate, in particular a shield plate made of aluminum or copper. The ferrite plates serve to guide the flow on the back of the windings in order to avoid voltage inductions in any circuit parts located behind them. The Shield plate in turn keeps the magnetic residual flux within the arrangement stops.
- - The coupling of the windings can be between 60% and 80%. This can be achieved, in particular, by the choice of the air gap, via which the stray inductance of the arrangement as well as the coupling of the system can be set. An increase in the air gap means an increase in the leakage flux associated with an increase in the leakage inductance and a reduction in the coupling inductance. The coupling factor can be realized favorably with a ratio inductor cross section / air gap of 10 to 20. Thus, a sufficient magnetizing current in the vicinity of the circuit is ensured and the necessary for the voltage control stray inductance becomes sufficiently large.
- - The shield plate can be designed as a heat sink. Advantageously, further expense for cooling is avoided.
- - On a side facing away from the winding side of the shield plates, a circuit carrier may be arranged, in particular a printed circuit board or an IMS. On the circuit board are one or more power electronic components. As a result, space is advantageously saved, especially if the shield plate is designed as a heat sink and thus a cooling of the components is already guaranteed.
Ein bevorzugtes, jedoch keinesfalls einschränkendes Ausführungsbeispiel für die Erfindung wird nunmehr anhand der Figuren der Zeichnung näher erläutert. Dabei sind die Merkmale schematisiert dargestellt. Es zeigen
-
1 ein Schaltbild eines Resonanzwandlers mit einem Transformator nach dem Stand der Technik; -
2 ein Schaltbild eines Resonanzwandlers mit einem Transformator;3 eine Wicklung des Transformators in Draufsicht;4 den Transformator in Seitenansicht.
-
1 a circuit diagram of a resonant converter with a transformer according to the prior art; -
2 a circuit diagram of a resonant converter with a transformer;3 a winding of the transformer in plan view;4 the transformer in side view.
Die Wechelrichteranordnung
Zwischen die beiden Ausgänge der Wechelrichteranordnung
Der Resonanzwandler
Die zweite Serie
Dazu ist der Transformator
In
Claims (7)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018206388.5A DE102018206388A1 (en) | 2018-04-25 | 2018-04-25 | DC / DC converter |
PCT/EP2019/058860 WO2019206612A1 (en) | 2018-04-25 | 2019-04-09 | Dc/dc converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018206388.5A DE102018206388A1 (en) | 2018-04-25 | 2018-04-25 | DC / DC converter |
Publications (1)
Publication Number | Publication Date |
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DE102018206388A1 true DE102018206388A1 (en) | 2019-10-31 |
Family
ID=66334366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102018206388.5A Withdrawn DE102018206388A1 (en) | 2018-04-25 | 2018-04-25 | DC / DC converter |
Country Status (2)
Country | Link |
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DE (1) | DE102018206388A1 (en) |
WO (1) | WO2019206612A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021108278A1 (en) | 2021-03-31 | 2022-10-06 | Keba Industrial Automation Germany Gmbh | Bidirectional DC/DC converter |
DE102021108250A1 (en) | 2021-03-31 | 2022-10-06 | KEBA Energy Automation GmbH | Charging station and method of operating a charging station |
EP4084283A1 (en) * | 2021-04-27 | 2022-11-02 | Wiferion GmbH | Wireless power transmission device for inductive electric power transmission and method for operating the power transmission device for supporting zero-voltage switching |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004040599A1 (en) * | 2002-10-31 | 2004-05-13 | Delta Energy Systems (Switzerland) Ag | A circuit board with a planar magnetic element |
DE102005039379A1 (en) * | 2005-08-19 | 2007-03-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Microelectronics inductor formed by sandwiching planar spiral coil in soft magnetic material, connects edges and center of magnetic substrates, to complete magnetic circuit |
US20070057755A1 (en) * | 2003-09-29 | 2007-03-15 | Yukiharu Suzuki | Solid electrolytic capacitor and manufacturing method thereof |
US20150364243A1 (en) * | 2014-06-13 | 2015-12-17 | Realtek Semiconductor Corp. | Electronic device with two planar inductors |
US20170062385A1 (en) * | 2015-08-28 | 2017-03-02 | Electronics And Telecommunications Research Institute | Power converting device |
US20170310143A1 (en) * | 2014-09-11 | 2017-10-26 | Renault S.A.S. | Method for controlling a battery charger having a dc-dc series resonant converter |
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WO2008012702A1 (en) * | 2006-07-21 | 2008-01-31 | Philips Intellectual Property & Standards Gmbh | Lighting system |
US20120234457A1 (en) * | 2011-03-15 | 2012-09-20 | Schulte David J | Method for upgrading the performance of an electronic device |
CN203588822U (en) * | 2013-09-13 | 2014-05-07 | 南京航空航天大学 | Non-contact transformer with hybrid-wound windings |
KR101835528B1 (en) * | 2016-01-25 | 2018-04-19 | 청주대학교 산학협력단 | Switching power supply with laminated structure |
JP6743432B2 (en) * | 2016-03-14 | 2020-08-19 | 株式会社Ihi | Coil device |
-
2018
- 2018-04-25 DE DE102018206388.5A patent/DE102018206388A1/en not_active Withdrawn
-
2019
- 2019-04-09 WO PCT/EP2019/058860 patent/WO2019206612A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004040599A1 (en) * | 2002-10-31 | 2004-05-13 | Delta Energy Systems (Switzerland) Ag | A circuit board with a planar magnetic element |
US20070057755A1 (en) * | 2003-09-29 | 2007-03-15 | Yukiharu Suzuki | Solid electrolytic capacitor and manufacturing method thereof |
DE102005039379A1 (en) * | 2005-08-19 | 2007-03-01 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Microelectronics inductor formed by sandwiching planar spiral coil in soft magnetic material, connects edges and center of magnetic substrates, to complete magnetic circuit |
US20150364243A1 (en) * | 2014-06-13 | 2015-12-17 | Realtek Semiconductor Corp. | Electronic device with two planar inductors |
US20170310143A1 (en) * | 2014-09-11 | 2017-10-26 | Renault S.A.S. | Method for controlling a battery charger having a dc-dc series resonant converter |
US20170062385A1 (en) * | 2015-08-28 | 2017-03-02 | Electronics And Telecommunications Research Institute | Power converting device |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021108278A1 (en) | 2021-03-31 | 2022-10-06 | Keba Industrial Automation Germany Gmbh | Bidirectional DC/DC converter |
WO2022207513A1 (en) | 2021-03-31 | 2022-10-06 | Keba Industrial Automation Germany Gmbh | Bidirectional dc-to-dc converter and operating method |
DE102021108250A1 (en) | 2021-03-31 | 2022-10-06 | KEBA Energy Automation GmbH | Charging station and method of operating a charging station |
WO2022207812A1 (en) | 2021-03-31 | 2022-10-06 | KEBA Energy Automation GmbH | Charging station and method for operating a charging station |
EP4084283A1 (en) * | 2021-04-27 | 2022-11-02 | Wiferion GmbH | Wireless power transmission device for inductive electric power transmission and method for operating the power transmission device for supporting zero-voltage switching |
WO2022229269A1 (en) * | 2021-04-27 | 2022-11-03 | Wiferion Gmbh | Wireless power transmission device for inductive electric power transmission and method for operating the power transmission device for supporting zero-voltage switching |
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WO2019206612A1 (en) | 2019-10-31 |
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